Abstract
Recent reports of 10 patients have proposed a papular variant of mycosis fungoides (MF), characterized by the appearance of papules in the absence of patches and the presence of histopathologic features of classic patch/plaque stage MF. Given the overlapping clinical and pathologic features between this proposed entity and lymphomatoid papulosis (LyP)-type B, however, the optimal classification for such cases remains somewhat unclear. Herein, two patients are described who presented to the dermatology clinic with persistent erythematous papular eruptions on the trunk, upper and lower extremities and histopathology compatible with MF. Of note, these patients represent the oldest reported cases of papular MF, and one patient had documented peripheral blood involvement by atypical CD4+ cells. The clinicopathologic characteristics of this purported entity suggest that it may occupy the intersection between MF and CD30+ lymphoproliferative disorders. These two cases expand the clinicopathologic spectrum of papular MF to include older individuals, and further emphasize the importance of recognition of this morphology as a possible MF manifestation. Furthermore, consideration of our cases in conjunction with the previously documented 10 other patients in the literature, offers potential insight into the relationship between MF and CD30+ lymphoproliferative disorders.
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